Cisco Catalyst 3560-X Series, Software Configuration Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring IGMP Snooping and MVR
Configuring IGMP Snooping
This example shows how to set the IGMP snooping querier source address to 10.0.0.64:
Switch#
configure terminal
Switch(config)# ip igmp snooping querier 10.0.0.64
Switch(config)# end
This example shows how to set the IGMP snooping querier maximum response time to 25 seconds:
Switch# configure terminal
Switch(config)# ip igmp snooping querier query-interval 25
Switch(config)# end
This example shows how to set the IGMP snooping querier timeout to 60 seconds:
Switch#
configure terminal
Switch(config)# ip igmp snooping querier timeout expiry 60
Switch(config)# end
This example shows how to set the IGMP snooping querier feature to Version 2:
Switch# configure terminal
Switch(config)# no ip igmp snooping querier version 2
Switch(config)# end
Disabling IGMP Report Suppression
Note
IGMP report suppression is supported only when the multicast query has IGMPv1 and IGMPv2 reports.
This feature is not supported when the query includes IGMPv3 reports.
IGMP report suppression is enabled by default. When it is enabled, the switch forwards only one IGMP
report per multicast router query. When report suppression is disabled, all IGMP reports are forwarded
to the multicast routers.
Step 4
ip igmp snooping querier query-interval
interval-count
(Optional) Set the interval between IGMP queriers. The range is 1 to
18000 seconds.
Step 5
ip igmp snooping querier tcn query [ count
count | interval interval ]
(Optional) Set the time between Topology Change Notification
(TCN) queries. The count range is 1 to 10. The interval range is 1 to
255 seconds.
Step 6 ip igmp snooping querier timer expiry
timeout
(Optional) Set the length of time until the IGMP querier expires.The
range is 60 to 300 seconds.
Step 7 ip igmp snooping querier version version (Optional) Select the IGMP version number that the querier feature
uses. Select 1 or 2.
Step 8 end Return to privileged EXEC mode.
Step 9
show ip igmp snooping vlan vlan-id (Optional) Verify that the IGMP snooping querier is enabled on the
VLAN interface. The VLAN ID range is 1 to 1001 and 1006 to 4094.
Step 10 copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose